Effect of Stem Diameter, Genetics, and Wood Properties on Stem Cracking in Norway Spruce
نویسندگان
چکیده
منابع مشابه
Fresh-wood bending: linking the mechanical and growth properties of a Norway spruce stem.
To provide data and methods for analyzing stem mechanics, we investigated bending, density and growth characteristics of 207 specimens of fresh wood from different heights and radial positions of the stem of one mature Norway spruce (Picea abies L. Karst.) tree. From the shape of each stress-strain curve, which was calculated from bending tests that accounted for shear deformation, we determine...
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The effect of artificially induced drought on radial increment and wood properties of Norway spruce.
We studied experimentally the effects of water availability on height and radial increment as well as wood density and tracheid properties of Norway spruce (Picea abies (L.) Karst.). The study was carried out in two long-term N-fertilization experiments in Southern Finland (Heinola and Sahalahti). At each site, one fertilized and one control plot was covered with an under-canopy roof preventing...
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This thesis describes studies with three different Norway spruce cutting clones in three growing environments differing in soil and climatic conditions within the boreal zone. The main aim was to follow variation in the radial growth rate, wood properties and lignin content and to modify wood lignin with a natural monolignol, coniferyl alcohol, by making use of inherent wood peroxidases. In add...
متن کاملFresh-stem bending of silver fir and Norway spruce.
The bending and growth characteristics of large fresh stems from four silver fir (Abies alba Mill.) and three Norway spruce (Picea abies (L.) Karst.) trees were studied. Twenty logs taken from different stem heights were subjected to four-point bending tests. From the bending test records, we calculated stress-strain curves, which accounted for detailed log taper, shear deformation and self wei...
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ژورنال
عنوان ژورنال: Forests
سال: 2018
ISSN: 1999-4907
DOI: 10.3390/f9090546